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A Tohono O’odham Nation police officer responding to a report about an armed and erratic driver was killed Thursday in an incident near a tribal casino about two hours west of ÃÛèÖÖ±²¥, authorities said.

The officer died near the Desert Diamond Casino in Why, a news release from the FBI said. Gov. Doug Ducey identified the officer as Officer Bryan Brown and said flags at state buildings in ÃÛèÖÖ±²¥ would be flown at half- staff Friday.

A statement from the tribe said officers were responding to a report of a public disturbance “by an armed and erratic driver� and that one officer suffered a serious injury attempting to arrest the person.

Brown was airlifted to a hospital in Phoenix, where he was pronounced dead, the statement said.

“This morning, the Tohono O’odham Police Department tragically lost one of its officers during the arrest of an individual,� the statement read.

Why, a community of less than 200 people 30 miles north of the Mexico border, is about 120 miles west of ÃÛèÖÖ±²¥ on ÃÛèÖÖ±²¥ 86.

Tohono O’odham police would not comment and referred calls to the tribe’s public-relations person, who referred calls to the FBI, which investigates serious crimes on tribal lands.

The FBI said a suspect was in custody and was taken to a hospital to treat his injuries.

The U.S. Border Patrol ÃÛèÖÖ±²¥ Sector said its agents helped Tohono O’odham police capture a male subject in Why around 9 a.m.

“The subject was placed into custody by USBP agents after he attempted to flee the area,� the agency said in an email.

“This is a sad day for the Tohono O’odham Nation, and our hearts go out to the family and friends of this fine officer who gave his life in the line of duty,� said Tohono O’odham Nation Chairman Ned Norris Jr. “Please keep them in your thoughts and prayers.�